Bone cancer, or bone sarcoma, is a rare cancer that occurs when the healthy cells in a bone undergo unwanted changes. This uncontrolled growth of bones leads to the formation of tumors. High-grade osteosarcoma is highly aggressive when it comes to growth and is a malignant primary cancer. This type of osteosarcoma is marked by its fast growth rate and the ability to metastasize to ... https://www.hcgoncology.com/types-of-cancers/bone-cancer/